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This is a quick and simple demonstration about reflexes (second activity on the page).

In this activity, learners construct a device that allows them to view 2-D images in 3-D.

In this activity (7th activity on the page), learners use their sense of touch to identify mystery objects hidden in socks.

In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system.

In this simple exploratory activity (1st activity on the page), blindfolded learners try to identify mystery items by smell.

In this activity (2nd activity on the page), learners explore the sensitivity of their sense of touch.

In this activity (11th activity on the page), learners use pennies to test their hearing acuity.